[jira] [Assigned] (IGNITE-27088) BinaryWriter should use internal String#value

["Nikolay Izhikov (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-27088?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Nikolay Izhikov reassigned IGNITE-27088:
----------------------------------------

    Assignee: Nikolay Izhikov

> BinaryWriter should use internal String#value 
> ----------------------------------------------
>
>                 Key: IGNITE-27088
>                 URL: https://issues.apache.org/jira/browse/IGNITE-27088
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Maksim Timonin
>            Assignee: Nikolay Izhikov
>            Priority: Major
>              Labels: ise
>         Attachments: WritingBigMapReproducer.java
>
>
> While writing Strings in BinaryWriter we call BinaryWriterExImpl#writeString, that calls String#getBytes. 
> Last call creates a copy of internal String#value byte array. Java does it intentionally, to avoid scenario when this array will be changed. 
> But writing a lot of strings leads to useless heap usage for creating such copies. Actually we can get this array using Unsafe/Reflection to optimize String writings.
> This change should be done carefully, because String.getBytes also provides encoding, and this behavior must be taken into account.
> Example of writeString/writeByteArray in attach



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